Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 811
aversing the galvano-meter will produce the greatest effect on the needle when thelatter stands at that angle. A slight error in reading either verygreat or very small deflections may cause a serious error in theresults. We would particularly point out that the accuracy of thetangent galvanometer… … Fig, 499. OBACH GALVANOMETER. Another instrument for measuring the strength of powerfulcurrents with great accuracy, is the Obach galvanometer, shownin fig. 499. It is a tangent galvanometer with a ring movableround a horizontal axis lying in the magnetic meridian. Theprinciple can be best…
Electrical engineering
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